Improvement in attachments for sewing-machines



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UNITED ySTATES PATENT QFFICE.

GEORGE A. COLTON AND SYLVESTER P. BABCOGK, OF ADRIAN, MICHIGAN.

IMPROVEMENT IN ATTACHMENTS FOR SEWING-MACHINES.

Specification 4forming part of Letters Patent No. 118,110, dated August 15, 1871.

To all whom it may concern:

Be it known that we, GEORGE A. OoL'roN and SYLvns'rER P. BABcooK, of Adrian, in the county of Lenawee and State of Michigan, have invented a new and valuable Improvement in Sewing-Machine Attachments; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawing making a part of this speciiication, and to the letters and figures of reference marked thereon.

Figure 1 ofthe drawing is a plan view of our invention. Fig. 2 is a side view of the same enlarged. Figs. 3, 4, 5, 6, 7, and 8 are details.

Our invention has relation to an improvement in corders for sewing-machines, and consists in the construction and novel arrangement of an adjustable pivoted cord-guide, detachable fingers, and presser-plate, and a bed-plate of novel construction, to which these parts are attached.

A of the drawing designates the bed-plate, provided with the guiding-flanch b. A slot, c, is made in the bed-plate to admit the end of the presser-plate. d represents a tongue or spring, formed in cutting the slot, and projecting upward from the same. The end of the spring d is turned downward to form a hook at e, which serves to secure the presserffoot in place. The fingers and corder are attached to the bed-plate by means of the set-screw h and the little button a with expanded end. B represents the presser-plate, provided with a small depressed hook, 7c, at its end, which passes under the hooked end of the spring d and becomes thereby locked to the bed-plate. C desi gna-tes the detachable lingers, provided with a large circular opening, f, through which the nut m of the bed-plate passes, and a small circular opening in the upper linger, through which the set-screw passes. At the rear end of the fingers a shouldered slot or catch, l, is formed, by means of which the iin gers are connected with the button n of the bed-plate. In order to bring the forward end of the lower nger level with the bed-plate a slight downward bend is made just after it passes the edge of the bed-.plate at the pointlettered r. D representsthe tripletongue, to which the corder E is pivoted. It is thought to be more secure in consequence of the interweaving of the tongues at the shoulder than the double tongue, but either may be used.

All the parts described above, with exception of the set-screw h and the nut m in the bed-plate, may be conveniently stamped out of sheet metal.

E represents the corder, pivoted to the triple or double-tongue at one side. It consists of an angular plate of brass or other metal, having a horizontal perforation, a, extending through it, from front to rear, at an angle of about forty-tive degrees, through which the cord passes to the seam. The front edge of the cord-plate E is rounded to suit the turn of the cloth in which the cord is to be bound. The angular point of the cord-plate at which the cord is delivered extends without the ngers at the side next the presser-plate. A lug, s, is formed on the side of the corder and serves to hold the adjusting setscrew z, which serves to regulate the angle of the corder, and operates by bearing against the gauge or ilanch b. n

Our attachment is designed to make a cordwelt and sew it into the seam at the same time. Its operation may be simply described. Put the corder and tongue between the fm gers and fasten all to the bed-plate by means of the button and set-screw. Thread the cord through the cordway, and by means of the set-screw, bearing against the gauge of the bed-plate, regulate or adjust the corder so that the cord will pass just outside the needle. The cloth to cover the cord should now be placed between the tongues, sliding it in from the end, and passing or doubling the cloth over the rounded edge of the cord-plate in such a manner that the cord shall be fed in the center. rIhe two edges of the goods are now inserted, one above and the other below the corder. The machine being now put in operation, the cord will be covered and stitched in place in between the edges of the cloth at the same time. Should it be found, upon commencing the seam, that the needle strikes into the cord, or too far from it, the cord-plate should be adjusted by means of the set-screw. l

We are aware that detachable presser-plates and spring-lingers ar'e not new. Hence we do not claim such broadly, but only the means for securing them to the bed-plate.

What We claim as our invention, and desire to secure by Letters Patent, is-

1. The angular cord-plate E, pivoted to the tongue D, provided with the oblique cord-Way a, and rendered adjustable by means of the set-screw z bearing against the gauge of the bed-plate, as speeied.

2. In combination with the sheet-metal bedplate having the slot c and springdlook d, the detachable pressenplate B provided with the depressed catch K, when constructed and arranged to operate as shown and described.

In testimony that We claim the above We have hereunto subscribed our names in the presence of two Witnesses.

GEO. A. COLTON. SYLVESTER P. BABOOGK. Witnesses:

JOHN LrNEsAY, FRED A. LUND. 

